Error installing PGAdmin for PostgreSQL on Linux?

Question

linux

There were a lot of errors while installing pgadmin.
Since the location of some files in the logs, it is quite difficult to google.
Can someone at least explain exactly what's going on? ) And I will already find a solution to the problem on tips.
Thank you all for your help, the community is very helpful)
Full installation text:

[email protected]:~# pip install pgadmin4-1.0-py2-none-any.whl                                                     
Processing ./pgadmin4-1.0-py2-none-any.whl                                                                       

* часть пропущена, т.к. слишком много * 
                                                        
  Using cached psycopg2-2.6.2.tar.gz                                                                             
Collecting linecache2==1.0.0 (from pgadmin4==1.0)         

* а здесь начинаются ошибки *                                                       
/usr/local/lib/python2.7/dist-packages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:318: SNIMissingWarning:
 An HTTPS request has been made, but the SNI (Subject Name Indication) extension to TLS is not available on this 
platform. This may cause the server to present an incorrect TLS certificate, which can cause validation failures.
 You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedoc
s.io/en/latest/security.html#snimissingwarning.                                                                  
  SNIMissingWarning                                                                                              
/usr/local/lib/python2.7/dist-packages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:122: InsecurePlatformWa
rning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and ma
y cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more inf
ormation, see https://urllib3.readthedocs.io/en/latest/security.html#insecureplatformwarning.                    
  InsecurePlatformWarning                                                                                        
  Downloading linecache2-1.0.0-py2.py3-none-any.whl                                                              
Collecting testscenarios==0.5.0 (from pgadmin4==1.0)                                                             
  Downloading testscenarios-0.5.0-py2.py3-none-any.whl                                                           
Collecting Werkzeug==0.9.6 (from pgadmin4==1.0)                                                                  
  Downloading Werkzeug-0.9.6.tar.gz (1.1MB)                                                                      
    100% |################################| 1.1MB 814kB/s 
Collecting Flask-Mail==0.9.1 (from pgadmin4==1.0)                                                                
  Downloading Flask-Mail-0.9.1.tar.gz (45kB)                                                                     
    100% |################################| 51kB 4.1MB/s 
Collecting ordereddict (from pgadmin4==1.0)                                                                      
  Downloading ordereddict-1.1.tar.gz                                                                             
Collecting Flask==0.11.1 (from pgadmin4==1.0)                                                                    
  Downloading Flask-0.11.1-py2.py3-none-any.whl (80kB)                                                           
    100% |################################| 81kB 3.6MB/s 
Collecting six==1.9.0 (from pgadmin4==1.0)                                                                       
  Downloading six-1.9.0-py2.py3-none-any.whl                                                                     
Collecting WTForms==2.0.2 (from pgadmin4==1.0)                                                                   
  Downloading WTForms-2.0.2-py27-none-any.whl (128kB)                                                            
    100% |################################| 133kB 3.7MB/s 
Requirement already satisfied: argparse in /usr/lib/python2.7 (from unittest2==1.1.0->pgadmin4==1.0)             
Installing collected packages: six, pyrsistent, MarkupSafe, Jinja2, Werkzeug, click, itsdangerous, Flask, WTForms
, Flask-WTF, passlib, importlib, linecache2, traceback2, pytz, blinker, sqlparse, python-dateutil, Babel, Flask-B
abel, extras, unittest2, Flask-Principal, speaklater, pycrypto, pbr, python-mimeparse, testtools, fixtures, beaut
ifulsoup4, html5lib, django-htmlmin, SQLAlchemy, Flask-SQLAlchemy, Flask-Login, Flask-Mail, Flask-Security, Flask
-Gravatar, simplejson, psycopg2, testscenarios, ordereddict, pgadmin4                                            
  Found existing installation: six 1.10.0                                                                        
    Uninstalling six-1.10.0:                                                                                     
      Successfully uninstalled six-1.10.0                                                                        
  Rolling back uninstall of six                                                                                  
Exception:
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/pip/basecommand.py", line 215, in main
    status = self.run(options, args)
  File "/usr/local/lib/python2.7/dist-packages/pip/commands/install.py", line 342, in run
    prefix=options.prefix_path,
  File "/usr/local/lib/python2.7/dist-packages/pip/req/req_set.py", line 784, in install
    **kwargs
  File "/usr/local/lib/python2.7/dist-packages/pip/req/req_install.py", line 851, in install
    self.move_wheel_files(self.source_dir, root=root, prefix=prefix)
  File "/usr/local/lib/python2.7/dist-packages/pip/req/req_install.py", line 1064, in move_wheel_files
    isolated=self.isolated,
  File "/usr/local/lib/python2.7/dist-packages/pip/wheel.py", line 247, in move_wheel_files
    prefix=prefix,
  File "/usr/local/lib/python2.7/dist-packages/pip/locations.py", line 140, in distutils_scheme
    d = Distribution(dist_args)
  File "/usr/local/lib/python2.7/dist-packages/setuptools/dist.py", line 320, in __init__
    _Distribution.__init__(self, attrs)
  File "/usr/lib/python2.7/distutils/dist.py", line 287, in __init__
    self.finalize_options()
  File "/usr/local/lib/python2.7/dist-packages/setuptools/dist.py", line 386, in finalize_options
    ep.require(installer=self.fetch_build_egg)
  File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2306, in require
    items = working_set.resolve(reqs, env, installer)
  File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 856, in resolve
    new_requirements = dist.requires(req.extras)[::-1]
  File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2550, in requires
    dm = self._dep_map
  File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2797, in _dep_map
    self.__dep_map = self._compute_dependencies()
  File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2806, in _compute_dependencies
    for req in self._parsed_pkg_info.get_all('Requires-Dist') or []:
  File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2788, in _parsed_pkg_info
    metadata = self.get_metadata(self.PKG_INFO)
  File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 1462, in get_metadata
    value = self._get(self._fn(self.egg_info, name))
  File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 1571, in _get
    with open(path, 'rb') as stream:
IOError: [Errno 2] No such file or directory: '/usr/local/lib/python2.7/dist-packages/six-1.10.0.dist-info/METADA
TA'

Answer 1

create a separate virtual machine for pgadmin (virtualenv pgadmin), activate and try to push pgadmin there.

Answer 2

The first error says that Python is old, with an expired TLS certificate, not supported by your platform. Update Python or request a new certificate (probably the repository's security key, but not 100% sure).
Actually the text of the second error also states that the version of Python is 2.7, but should be higher. And a link to read more https://urllib3.readthedocs.io/en/latest/security....